I admit I am biased towards Intel but I would just rebuild and only reuse the 840 Evo. And even then for a gaming pc, it can be tough to use 120GB for much more than a boot drive.. I don't know how you gathered your specs but you should be able to get a better idea with a free program called Speccy. Download from Piriform's website. You could still sell your old rig and put it towards the new one, or keep it and build a NAS.